The mathematical mystery inside the shooter Quake 3 (scientificamerican.com) 2 points by emmelaich 4mo ago ↗ HN
[–] dekhn 4mo ago ↗ "If I asked you to calculate the inverse square root of 26 without a calculator, you’d probably be stuck for a while—and honestly, so would I."Um, 5*2 is 25 and 6*2 is 36 so we know the square root of 26 is between thos two and likely a lot closer to 5.1.And 1/5 = 0.2. The correct answer is .196 plus a few irrelevant digits.
2 comments
[ 934 ms ] story [ 2132 ms ] threadUm, 5*2 is 25 and 6*2 is 36 so we know the square root of 26 is between thos two and likely a lot closer to 5.1.
And 1/5 = 0.2. The correct answer is .196 plus a few irrelevant digits.